Only apply access level constraint if we have a nominal type

Author: aschwaighofer

lib/IRGen/GenType.cpp

@@ -2258,6 +2258,8 @@ SILType irgen::getSingletonAggregateFieldType(IRGenModule &IGM, SILType t,
         // struct's.
         if (fieldDecl->getEffectiveAccess() >= structDecl->getEffectiveAccess())
           return fieldTy;
+      } else {
+        return fieldTy;
       }
     }
 
@@ -2281,6 +2283,8 @@ SILType irgen::getSingletonAggregateFieldType(IRGenModule &IGM, SILType t,
         // enclosing struct's.
         if (eltDecl->getEffectiveAccess() >= enumDecl->getEffectiveAccess())
           return enumEltTy;
+      } else {
+        return enumEltTy;
       }
     }